Product Description
E4 - E20 Tekton 3/8" Dr Shallow External Star Impact Socket Set with Rail 12 Pcs - SID91116
Tekton's shallow impact external star (E-star) sockets are made from 50BV30 chromium-vanadium steel that's heat-treated to 4047 HRC for use on impact wrenches. The socket is also coated with a manganese phosphate finish to resist corrosion. The inside of the socket's drive end has smooth walls with no detent grooves to support engagement with drive tools that use friction ring anvils. A detent pin hole on one side of the drive end also supports engagement with detent pin anvil styles.
Features
- Precise E-Star Geometry The internal six-lobe geometry is designed for a high-torque fit that resists slipping
- Made from Cr-V Steel The chromium-vanadium socket is heat-treated to 4047 HRC for use on impact wrenches
- Corrosion-Resistant The socket is coated with a manganese phosphate finish to resist corrosion
- Two Size Markings The size is marked with a high-visibility laser marking and a permanent stamped marking that won't rub off
- Friction Ring or Detent Pin Anvils Smooth walls inside the drive end and a detent pin hole make the bit sockets compatible with both drive tool anvil types
- Socket Rail The twist-to-lock clips on the rail hold sockets securely and can be repositioned anywhere along the rail
Specifications
- Country of Origin: Sockets made in Taiwan. Rail made in USA.
- Weight (lbs): 0.95
Dimensions

Other Details
Tekton Warranty Information: We keep it simple - if your tool doesn't work like it should, let us know and we'll make it right. We ship replacement parts within the United States and Canada. Request a Warranty No Time Limits It doesn't matter when you got the tool or how old it is. No Receipts You don't have to worry about keeping receipts. If you own the tool, our support comes with it. Often, we ask you to send a picture of your product to verify your request and give us more information. Shipping on Us When we send you a replacement item, we always cover the cost of shipping the new product.Our Warranty Explained We keep it simpleif your tool doesn't work like it should, let us know and we'll make it right. We ship replacement parts within the United States and Canada. Request a Warranty No Time Limits It doesn't matter when you got the tool or how old it is. No Receipts You don't have to worry about keeping receipts. If you own the tool, our support comes with it. Often, we ask you to send a picture of your product to verify your request and give us more information. Shipping on Us When we send you a replacement item, we always cover the cost of shipping the new product. Request a warranty replacement at the following link: https://www.tekton.com/warrantyProduct Videos
Custom Field
Size E4 - E20
Drive Size 3/8
Sets 12